Entanglement Dynamics in Anti--Symmetric Systems
arXiv:2207.06742 · doi:10.1103/PhysRevResearch.4.033022
Abstract
In the past years, many efforts have been made to study various noteworthy phenomena in both parity-time () and anti-parity-time () symmetric systems. However, entanglement dynamics in -symmetric systems has not previously been investigated in both theory and experiments. Here, we investigate the entanglement evolution of two qubits in an -symmetric system. In the -symmetric unbroken regime, our theoretical simulations demonstrate the periodic oscillations of entanglement when each qubit evolves identically, while the nonperiodic oscillations of entanglement when each qubit evolves differently. In particular, when each qubit evolves near the exceptional point in the -symmetric unbroken regime, there exist entanglement sudden vanishing and revival. Moreover, our simulations demonstrate rapid decay and delayed death of entanglement provided one qubit evolves in the -symmetric broken regime. In this work, we also perform an experiment with a linear optical setup. The experimental results agree well with our theoretical simulation results. Our findings reveal novel phenomena of entanglement evolution in the -symmetric system and opens a new direction for future studies on the dynamics of quantum entanglement in multiqubit -symmetric systems or other non-Hermitian quantum systems.
arXiv comment13 pages, 8 figures
References in corpus (47)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
- Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
- On the Measurement of Qubits
- Topological phases of non-Hermitian systems
- Nonlinear waves in -symmetric systems
- Dynamically encircling exceptional points in a waveguide: asymmetric mode switching from the breakdown of adiabaticity
- Topological energy transfer in an optomechanical system with exceptional points
- PT-Symmetric Phonon Laser
- Observation of non-Hermitian degeneracies in a chaotic exciton-polariton billiard
- Observation of parity-time symmetry breaking transitions in a dissipative Floquet system of ultracold atoms
- Anti-Parity-Time Symmetric Optics via Flying Atoms
- Metrology with -symmetric cavities: Enhanced sensitivity near the -phase transition
- Heralded Entanglement between Atomic Ensembles: Preparation, Decoherence, and Scaling
- Sudden Death of Entanglement: Classical Noise Effects
- Parity-time-symmetric quantum critical phenomena
- Experimental demonstration of three-color entanglement
- Dynamically encircling an exceptional point in anti-PT-symmetric systems: asymmetric mode switching for symmetry-broken states
- Information Retrieval and Criticality in Parity-Time-Symmetric Systems
- Antisymmetric PT-photonic structures with balanced positive and negative index materials
- Unconventional Singularity in Anti-Parity-Time Symmetric Cavity Magnonics
- Observation of critical phenomena in parity-time-symmetric quantum dynamics
- Experimental demonstration of photonic entanglement collapse and revival
- Mixed-state evolution in the presence of gain and loss
- Synthetic parity-time symmetry breaking in a single microcavity
- Breaking Anti- Symmetry by Spinning a Resonator
- Anti-Parity-Time Symmetric Optical Four-Wave Mixing in Cold Atoms
- Observation of anti-PT symmetry phase transition in the magnon-cavity-magnon coupled system
- Sudden vanishing of spin squeezing under decoherence
- Increase of entanglement by local PT -symmetric operations
- Odd-time reversal symmetry induced by anti--symmetric medium
- Exceptional Point and Cross-Relaxation Effect in a Hybrid Quantum System
- Liouvillian exceptional points of any order in dissipative linear bosonic systems: Coherence functions and switching between and anti- symmetries
- Sudden vanishing and reappearance of nonclassical effects: General occurrence of finite-time decays and periodic vanishings of nonclassicality and entanglement witnesses
- Flattening the Curve with Einstein's Quantum Elevator: Hermitization of Non-Hermitian Hamiltonians via a Generalized Vielbein Formalism
- Experimental observation of information flow in the anti--symmetric system
- -symmetric slowing-down of decoherence
- Delayed sudden death of entanglement at exceptional points
- Observation of entanglement sudden death and rebirth by controlling solid-state spin bath
- Distant entanglement enhanced in -symmetric optomechanics
- Entanglement enhanced and one-way steering in PT -symmetric cavity magnomechanics
- Experimental demonstration of coherence flow in - and anti--symmetric systems
- Quantum information dynamics in a high-dimensional parity-time-symmetric system
- Optomechanical dynamics in the - and broken--symmetric regimes
- Stable States with Non-Zero Entropy under Broken -Symmetry
- Probing phase transitions in non-Hermitian systems with Multiple Quantum Coherences
- Coherent population oscillations and an effective spin-exchange interaction in a symmetric polariton mixture
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- Dynamical non-Hermitian systems: Fingerprints and pure dephasing induced protection effect
- Non-Hermiticity induced thermal entanglement phase transition
- Enhancement of quantum sensing in a dissipatively coupled two-mode system